Table 2.

Comparison of the device use rates in elderly and non-elderly patients

Device	Elderly (≥60 years) N = 60,332		Non-elderly (< 60 years) N = 74,305		χ2	P
	No. of use	Use rate%	No. of use	Use rate%
Ventilator	1854	3.1	1544	2.1	134.015	< 0.001
Central line	3994	6.6	4103	5.5	71.046	< 0.001
Urinary catheter	16,376	27.1	20,577	27.7	5.048	0.025